Not a complaint session, but a legitimate inquiry.  Background, I've cleared VMA a number of times on different builds, so when the event happened the last week I was happy to try to finish the sticker book on perfected gear.  Went in with my go-to Magsorc build I have used for 2 years expecting the typical easymode clear.  Have run this since CP 2.0 went into effect.  However, this is the first time running it since that second CP reset a few months ago, I think when Midyear Mayhem occured (?).
Everything went as expected until the final boss.  Suddenly, it was like I had no armor and zero resistances.  Was regularly taking 20-30K in damage from the crematorial guards and 10K from the Clannfear headbutt.  There were times when that duo would one-shot me.  Kiting was very difficult as I felt really slow without using Boundless Storm.  27K+ in health, 17K+ in spell resistance, 14K+ in physical, max in Ironclad and Bastion, CP in blue and red trees where you would expect for a PVE setup.  Basically a heavy attack build with False Gods & Mother's Sorrow & VMA Lightning Staff with Pale Order and Domihaus.  Damage is not the issue, that has stayed the same.  Hardened Ward, Crit Surge, and Boundless Storm are my shield-type skills.  Tried with Harness Magicka.  It did absolutely nothing, including not giving magicka back as I was getting hammered.  With all of this, zero damage mitigation so most of the time I was using Boundless and the Matriarch to run around staying alive.  Health bar was going crazy.
Thinking things might have changed with the last update, I ran 2 other builds through: a Stamblade Werewolf and a Magplar.  Just fine.  No overwhelming damage.  Good times.
I've never experienced this with this build.  Was wondering if anyone else has.  Is it a glitch?  Is it the build?